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Patented May 13', 1919:.

INVENTOR Aux-07a QE yyers,

///5 A TTORN V UNITED strArnsrnrENT OFFICE.

ANTON C. EGGERS, OF BROOKLYN, NEW YORK, ASSIGNOR TO THE GOODYEARS INDIA RUBBER GLOVE MANUFACTURING'COQ A CORPOBATION OF CONNECTICUT.

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'To all whom it may concern:

Be it known thatI, ANTON C. EGGERS, a citizen of theUnited States, and a resident of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Nursing-Bottles, of which the following is a full, clear, and exact description.

The present invention relates to nursing bottlesand has for its primary object to provide means for securing the rubber nipple to the bottle without distorting the former.

Referring to the drawing the' figure shows a fragmental sectional view of a nursing bottle with the nipple attached thereto.

Nipples for nursing bottles have a com paratively short life. They must, ofv course,

i be frequently cleansed and made perfectly sanitary while in use and this coupled with other necessary harsh treatment to which they are subjected results, in a comparatively short time in taking much of the ,life out of the rubber. This prevents the nipple from standing out firmly in its original shape, and causes itto assumea rather col lapsed condition. The surface moreover develops a slight sticky condition which tends to hold the walls together thereby caus- 111%th6 nipple to become useless. v

ipples heretofore, as far as I am aware, have been applied to the" nursing bottles by directing their margins downwardly. and stretching them over the outside of the bot. tle. The margin must be made considerably smaller than the bottle inorder to secure a tight joint when the former is stretched over the latter. This stretching distorts the nipple from its ori 'nal shape when applied and destroys the uniformity of resistance against compression which istmuch to be desired in order to msure a ready and uniform return 3 of the nipple to its-original shape. Moreover, as soon as the life of the rubber begins. to diminish it takes more 6r less of a permanent set in its stretched condition and but loosely fits the bottle so 'that leakm results; I obviate these objections by attac ing the e I nipple to the-bottle without sub'ecting it to the usual stretchin action. his 1s. 'accomplished by provi ing independent means for securing the nipple and bottle together. There may be numerous contriirancesiforaccomplishingf this, the means shown -in "the drawing presents a simtple construction but itis to be understood at my invention 1s ber margin 2.

Specification of Letters Patent. Patented May 13;, 1919 I Application flled lebruary 15, 1916. Serial No. 78,351' i rim to provide a seat for the" outwardly flaring substantially flat annular margin 2 of the nipple 3. A ready means of securing the margin and bottle together is by the use of a cap 4 which sets upon the top of the margin and is provided with means for securing it to 'the bottle and for producing'thc required pressure upon the rubber margin to make the required tight joint. In the present illustration this is accomplished by threading the ca and the bottle so that the i cap may be readi y secured and detached and the required pressure produced. To facili tate-this the edge of the margin 2 is thickened to form a bead 5 and the cap is corre-' spondingly bulged upwardly to provide an engaging groove for the bead. This holds the margin in place and prevents any likelihood of its being squeezed or pulled from the rim of the bottle on which it is seated. To insure a. free turning of thecap a washer 6 may be interposed between it and the rub- There is often a. partial vacuum set up in the bottle due to the withdrawal of its con tents and the temporary sealing which prevents the ingress of air. suction upon the nipple which would tend to draw it into the bottle. To prevent this tendency the nipple isprovided with a restricted throat 7 which is formed by extending the side walls above the margin, that is in a direction toward the apex of the nipple, outwardly at a sharp acute angle to the margin, which itself lies at substantially right angles to the longitudinal axis of the nipple. There is thus provided an external groove 8 into which the rim about the perfo- A I ration of the cap 4: snugly fits. The head .9 "of the nipple is relatively narrow andv its This produces a formation of a vacuum. The restriction of p the mouth is not so great however, but that the rubber nipple may be easily passed through it when the parts are assembled.

From the foregoing it will thus be seen that I provide a nursing bottle which is simple in construction, easily cleaned to maintain it perfectly sanitary, and wherein the nipple is quickly and easily secured toconverging flange to meet said margin at a sharp acute angle.

2. A nipple for a nursing bottle provided with a narrow head portion adjoiningan outwardly flaring breast portion, and a substantially flat margin adapted to rest on the edge of the bottle, the lower walls of said breast portion being molded into the form,

.of an inwardly converging flange to meet said margin at a sharp acute angle.

3. A nipple for a nursing bottle provided with a narrow head portion adjoining an outwardly flaring breast portion, and a substantially fiat margin lying at substantially right angles to the longitudinal axis of the nipple, the walls of said breast portion being inwardly turned to meet said margin at a sharp acute angle.

4. In combination, a bottle, a perforated cap detachably secured to the bottle, and a nipple extending through the perforation and secured to the bottle by the cap, said nipple being provided with a narrow head portion ad oining an outwardly flaring breast portion, and a substantially flat margin adapted to rest on the edge of the bottle, the lower walls of said breast portion being molded into the form of an inwardly converging flange to meet said margin at a sharp acute angle.

Signed at New York city, county of New York, State of New York, this 14th day of February, 1916.

' ANTON C. EGGERS. 

